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Shell Of The Week
Mangrove
Periwinkle
by José H. Leal,
PhD, Bailey-
Matthews National
Shell Museum
Science Director
and Curator
This is another
encore for a
local species,
as I featured
the Mangrove
Periwinkle,
Littoraria angulifera (Lamarck, 1822),
originally in this column on May 29,
2015. As the vernacular name implies,
Mangrove Periwinkles inhabit the
trunks and branches of mangrove
trees, in particular those of the Red
Mangrove. Periwinkles may reach 1.25
inches; they are marine snails highly
adapted at living completely out of sea
water, usually high above the intertidal
(“between tides”) zone. Mangrove
Periwinkles feed, using the teeth of
their rasping radula, on the thin film of
fungi and algae that grow on the bark
of mangrove trees. Learn more about
local mollusks at www.shellmuseum.
org/shells/southwest-florida-shells.
Shell Museum Events
See truly giant shells. Watch a live
Tank Talk. Take a daily beach walk.
Check out our family programs. We
are the only natural history museum
in North America devoted entirely to
shells. Let us inform and inspire you.
Drop by or visit www.shellmuseum.org.
The Bailey-Matthews National Shell
Museum is located at 3075 Sanibel-
Captiva Road. Call 395-2233 or visit
www.shellmuseum.org.
The Mangrove Periwinkle, Littoraria angulifera, shell and live snail from Sanibel
photos by José H. Leal
ISLAND SUN - JANUARY 5, 2018
20
AIRPORT & LOCAL SERVICE
www.IslandTaxi.com • ride@islandtaxi.com
239-472-4888
More Than a Ride!
Call
Madeline
for
Reservations
Gear Guide:
Materials Matter
by Walter
Cheatham
Though
possible,
traveling
by kayak, canoe
or paddleboard
becomes decidedly
more difficult
without a paddle.
The first thing to
consider when
choosing this important piece of
equipment is the material. Paddles
come in many materials, but there are
four that are most commonly used.
The first, wood, makes a gorgeous
paddle, but it is heavy. Wood is ideal
for the paddler who values aesthetics
over weight. Aluminum is the primary
material for beginner’s paddles. It is
durable and inexpensive. Aluminum,
like wood, is also heavy. Fiberglass
paddles are lighter than the previous
two materials and tend to be a bit
pricier. However, for those who spend
more time on the water, a lighter
paddle could be worth the investment.
Fiberglass is also durable, so damage
becomes less of a worry. Carbon fiber is
the lightest and most expensive material
on our list. For frequent paddlers or
those who make long trips, this material
will greatly reduce fatigue and will be
worth the extra money.
One other component to consider is
stiffness. Fiberglass and carbon fiber are
stiffer than other materials. This means
that more power from the paddler is
transferred to the water with less effort.
Materials like aluminum and plastic
(not discussed here) will give slightly
with each stroke, reducing your energy
transfer. More stiffness equals less work,
and less work means more fun.
Paddles are your connection to the
water, so finding the right material
for your paddling pursuits and for
your budget is the first step to gearing
up properly for the most enjoyable
paddling experience. Buying your first
paddle is a daunting but exciting task.
Choose wisely, and have fun.
Walter Cheatham is an experienced
paddler and ACA-Certified Paddling
Instructor. Ocean Tribe Paddlers
helps the Southwest Florida paddling
community better explore, enjoy
and understand the ocean. Visit
oceantribepaddlers.org or follow us on
Facebook to learn more.
Amberjack
Season Closure
The greater amberjack recreational
season in gulf state waters will
remain closed through April
30, and will reopen to harvest May
1 through 31 and August 1 through
October 31.
Greater amberjack is overfished and
undergoing overfishing, and the season
has closed increasingly early in recent
years due to federal quotas being met
or exceeded. This new season structure
will optimize recreational fishing
opportunities in both the spring and
fall while minimizing harvest during the
spawning season, helping to rebuild the
stock.
For more information, visit ww w.
MyFWC.com/Fishing.